[Difx-users] DiFX version for VGOS data correlation {External}

[Adam Deller]

The short story (as I recall) was that a bug in DiFX regarding complex
sampled data and a bug in one of the DBEs cancelled out prior to 2.5.4.
After that, the DiFX bug was fixed but the DBE bug hasn't been yet.

Cheers,
Adam

On Fri, 11 Mar 2022 at 08:15, Geoff Crew via Difx-users <
difx-users at listmgr.nrao.edu> wrote:

> The issues have to do with the way complex spectra are processed and
> handled in the backends and DiFX.  2.5.4 was created as a stable
> processing release for VGOS until the resources were free to guarantee
> operation in a "current" release.  And fixing this situation requires
> some coordination with the way backends are operated.  I'm not fluent in
> the details.
>
> A 2.7.1 release for the EHT processing of the 2021 campaign is likely to
> occur in the next few months (as the media need to be recycled) and a
> 2.7-based release suitable for VGOS was one of the options discussed,
> but I do not know the current plan for VGOS.
>
>
> On 3/10/22 15:07, Michael Dutka via Difx-users wrote:
> > Hi Difx Users,
> > Currently, as I understand things, it is advised that DiFX version
> > 2.5.4 should be used to correlate VGOS data.  I was wondering if
> > anyone here had any documentation explaining why that's necessary and
> > why we can not use the latest tagged release?  I was also wondering if
> > anyone is working on making sure VGOS correlation will be able to be
> > done with future versions of DiFX?
> > Any help with this would be greatly appreciated!
> > -Mike
> >
> --
> Geoff Crew
> gbc at haystack.mit.edu
>
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>


-- 
!=============================================================!
Prof. Adam Deller
Centre for Astrophysics & Supercomputing
Swinburne University of Technology
John St, Hawthorn VIC 3122 Australia
phone: +61 3 9214 5307
fax: +61 3 9214 8797
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